/*
 Copyright (C) 2008  Maurizio Monticelli

 This program is free software; you can redistribute it and/or modify it under the terms of the 
 GNU General Public License as published by the Free Software Foundation; either version 2 of the 
 License, or (at your option) any later version.

 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without 
 even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General 
 Public License for more details.

 You should have received a copy of the GNU General Public License along with this program; if not, write 
 to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA 
*/

package ch.justdoit.andriodrpncalc.model.command;

import ch.justdoit.andriodrpncalc.model.Model;

public abstract class BaseCommand  implements ICommand {

	protected String mCommandName = "";
	protected String mExpression = "";
	protected String mExpressionEnd = null;
	protected Model mModel;
	
	protected boolean canUndo = true;
	
	public BaseCommand(Model _model) {
		mModel = _model;
	}
	
	protected void resetErrorMessage() {
		mModel.setErrorMessage("");
	}

	@Override
	public boolean canUndo() {
		// TODO Auto-generated method stub
		return canUndo;
	}


	@Override
	public String getExpression() {
		return mExpression;
	}
	
	public void setExpression(String expression) {
		mExpression = expression;
	}

	@Override
	public String getCommandName() {
		return mCommandName;
	}
	
	@Override
	public abstract boolean undo();
	@Override
	public abstract boolean doit();


}
